Garry N. Drummond has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Abstract: A bench mining method, particularly useful for open pit bench mining, which employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden.

Abstract: A bench mining method, particularly useful for open pit bench mining, which employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden.

Abstract: A bench mining system and mining method, particularly useful for open pit bench mining, employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden. The apron feeders are preferably equipped with a self-cleaning arrangement to facilitate continuous operation without undue stoppages.